Transformations of amorphous silica under high pressure and high temperature
文献类型：期刊论文
| 作者 | Xiao, WS; Li YC(李延春) ; Liu J(刘景); Li, YC; Liu, J; Weng, KN; Xie, HS
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| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
 |
| 出版日期 | 2005 |
| 卷号 | 29页码:#REF! |
| 关键词 | amorphous silica high pressure and high temperature quartz coesite |
| 其他题名 | 非晶态SiOn2的高温高压转变研究 |
| 通讯作者 | Xiao, WS (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China. |
| 英文摘要 | Aimed at the transformation methods and mechanism of amorphous silica on the conditions of high pressure and high temperature, we used the Changbaishan diatomite, which had been heating treated at 700 degrees C, as the sample of amorphous silica, to carried out the in situ high pressure and high temperature synchrotron X-ray diffraction determinations (EDXD method) in the range of pressure of 0-4GPa and temperature of 1000-1300K by the diamond anvil cell apparatus and double-sided laser heating technique. The experimental results indicate that amorphous silica transform to alpha-quartz, but not beta-quartz and cristobalite in the range of pressure of 0.8-2.4GPa and temperature of 1000-1300K. The crystalline temperature of amorphous silica under high pressure is much lower than that of ambient condition. The results means that the pressure is favored to low the activation energy of amorphous transform to crystalline phases, and would change the metastable phase transformation mechanism, leading to the different crystalline phases. In the range of pressure of 3-4GPa and temperature at 1300K, both amorphous silica and quartz transform to coesite. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000234206900030 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226265]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Xiao, WS,Li YC,Liu J,et al. Transformations of amorphous silica under high pressure and high temperature[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2005,29:#REF!. |
| APA | Xiao, WS.,李延春.,刘景.,Li, YC.,Liu, J.,...&Xie, HS.(2005).Transformations of amorphous silica under high pressure and high temperature.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,29,#REF!. |
| MLA | Xiao, WS,et al."Transformations of amorphous silica under high pressure and high temperature".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 29(2005):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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